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Re: st: Balanced panel
From
Estrella Gomez <[email protected]>
To
[email protected]
Subject
Re: st: Balanced panel
Date
Thu, 11 Jul 2013 16:09:49 +0200
Perfect! Thanks a lot
Estrella
2013/7/11 Nick Cox <[email protected]>:
> Check out -fillin-.
>
> [D] fillin . . . . . . . . . . . . . . . . . . . . Rectangularize dataset
> (help fillin)
>
> SJ-5-1 dm0011 . . . . . . . . . . . . . . Stata tip 17: Filling in the gaps
> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N. J. Cox
> Q1/05 SJ 5(1):135--136 (no commands)
> tips for using fillin to fill in gaps in a rectangular
> data structure
> Nick
> [email protected]
>
>
> On 11 July 2013 14:47, Estrella Gomez <[email protected]> wrote:
>> Dear statalisters
>>
>> I have a panel that contains exporters, importers and years. Since
>> some countries do not trade at all, I would like to generate the zero
>> observations for those cases. The command tsfill, full allows me to do
>> it for a pair of countries that traded in a given year, but no in the
>> rest. It generates zero observations for the years in which two
>> countries did not trade, given that those countries traded in some
>> year of the sample.
>>
>> However, I would also like to generate zero flows if two countries did
>> not trade at all in any year. For instance, in the following case:
>>
>> t exporter importer trade
>> 2006 AR CA 1
>> 2008 AR CA 1
>> 2006 US CA 1
>> 2007 US CA 1
>> 2008 US CA 1
>> 2006 US AR 1
>> 2007 US AR 1
>> 2008 US AR 1
>> 2006 CA US 1
>> 2007 CA US 1
>> 2008 CA US 1
>> 2006 AT US 1
>> 2007 AT US 1
>> 2008 AT US 1
>>
>> tsfill, full would generate:
>>
>> t exporter importer trade
>> 2007 AR CA .
>>
>> but I would also need
>>
>> t exporter importer trade
>> 2006 AR AT .
>> 2007 AR AT .
>> 2008 AR AT .
>>
>>
>> Any idea?
>> Thank you very much,
>> Estrella
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